@@ -230,6 +230,7 @@ External library support:
--enable-libdavs2 enable AVS2 decoding via libdavs2 [no]
--enable-libdc1394 enable IIDC-1394 grabbing using libdc1394
and libraw1394 [no]
+ --enable-libdvdread enable DVD reading using libdvdread [no]
--enable-libfdk-aac enable AAC de/encoding via libfdk-aac [no]
--enable-libflite enable flite (voice synthesis) support via libflite [no]
--enable-libfontconfig enable libfontconfig, useful for drawtext filter [no]
@@ -1814,6 +1815,7 @@ EXTERNAL_LIBRARY_LIST="
libdav1d
libdc1394
libdrm
+ libdvdread
libflite
libfontconfig
libfreetype
@@ -3557,6 +3559,7 @@ xv_outdev_deps="xlib_xv xlib_x11 xlib_xext"
# protocols
async_protocol_deps="threads"
bluray_protocol_deps="libbluray"
+dvd_protocol_deps="libdvdread"
ffrtmpcrypt_protocol_conflict="librtmp_protocol"
ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl mbedtls"
ffrtmpcrypt_protocol_select="tcp_protocol"
@@ -6568,6 +6571,8 @@ enabled libdav1d && require_pkg_config libdav1d "dav1d >= 0.5.0" "dav1d
enabled libdavs2 && require_pkg_config libdavs2 "davs2 >= 1.6.0" davs2.h davs2_decoder_open
enabled libdc1394 && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
enabled libdrm && require_pkg_config libdrm libdrm xf86drm.h drmGetVersion
+enabled libdvdread && enable dvdread
+enabled dvdread && require_pkg_config libdvdread dvdread "dvdread/dvd_reader.h" DVDOpen2
enabled libfdk_aac && { check_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
{ require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
warn "using libfdk without pkg-config"; } }
@@ -275,6 +275,67 @@ For example, to convert a GIF file given inline with @command{ffmpeg}:
ffmpeg -i "data:image/gif;base64,R0lGODdhCAAIAMIEAAAAAAAA//8AAP//AP///////////////ywAAAAACAAIAAADF0gEDLojDgdGiJdJqUX02iB4E8Q9jUMkADs=" smiley.png
@end example
+@section dvd
+
+Reads DVD titles from image or folder backups.
+
+After opening the dvd, the protocol will read and output the VOBs,
+associated with the longest or requested @command{title}, in the cell
+and pack sequence defined by the program-chain. It will stop, when reaching
+the end of the @command{title}.
+
+@subsection Limitations
+
+There are some limitations in the stream information that this protocol
+provides:
+@itemize @bullet
+@item
+Some of the streams, like subtitles, are discovered by @command{ffmpeg} while
+parsing the DVD stream, thus large enough @command{probesize} and @command{analyzeduration}
+are needed to discover those while probing or remuxing.
+@item
+The protocol does not handle the presentation or decoding timestamps, as decoding is done by
+the probed decoder, VOB. And so it might be necessary to generate the presentation
+timestamps for formats that need them via @command{-fflag +genpts}.
+@item
+The chapter and language stream information is present in the side-files (BUP/IFO),
+that are parsed for identifying the correct main video-title-set, but are not attached
+to the stream information.
+@end itemize
+
+The accepted options are:
+@table @option
+
+@item angle
+DVD angle
+
+@item title
+DVD title to read (VIDEO_TS/VTS_??_??.mpls)
+
+@end table
+
+@subsection Examples
+
+Read longest title from DVD mounted to /mnt/dvd:
+@example
+dvd:/mnt/dvd
+@end example
+
+Read longest title from DVD image backup /mnt/nfs/dvd.iso:
+@example
+dvd:/mnt/nfs/dvd.iso
+@end example
+
+Read title 6 and angle 1 from DVD mounted to /mnt/dvd:
+@example
+-title 6 -angle 1 dvd:/mnt/dvd
+@end example
+
+Remux longest title from DVD mounted to /mnt/dvd into Matroska container, while skipping the unsupported @code{dvd_nav_packet} stream:
+@example
+-fflags +genpts -probesize 20M -analyzeduration 20M dvd:/mnt/dvd -map 0:0 -map -0:0 -codec copy out.mkv
+@end example
+
@section fd
File descriptor access protocol.
@@ -644,6 +644,7 @@ OBJS-$(CONFIG_CONCAT_PROTOCOL) += concat.o
OBJS-$(CONFIG_CONCATF_PROTOCOL) += concat.o
OBJS-$(CONFIG_CRYPTO_PROTOCOL) += crypto.o
OBJS-$(CONFIG_DATA_PROTOCOL) += data_uri.o
+OBJS-$(CONFIG_DVD_PROTOCOL) += dvd.o
OBJS-$(CONFIG_FFRTMPCRYPT_PROTOCOL) += rtmpcrypt.o rtmpdigest.o rtmpdh.o
OBJS-$(CONFIG_FFRTMPHTTP_PROTOCOL) += rtmphttp.o
OBJS-$(CONFIG_FILE_PROTOCOL) += file.o
new file mode 100644
@@ -0,0 +1,327 @@
+/*
+ * DVD (libdvdread) protocol
+ * Copyright (c) 2023 Stan Ionascu <stanislav.ionascu@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <dvdread/dvd_reader.h>
+#include <dvdread/ifo_read.h>
+#include <dvdread/ifo_print.h>
+
+#include "libavformat/avformat.h"
+#include "libavformat/url.h"
+#include "libavutil/avstring.h"
+#include "libavutil/opt.h"
+
+#define DVD_PROTO_PREFIX "dvd:"
+#define DVD_SECTOR_SIZE 2048
+
+typedef struct {
+ const AVClass *class;
+
+ dvd_reader_t *dvd;
+ dvd_logger_cb dvd_logger;
+
+ int title_nr;
+ int angle_nr;
+ dvd_file_t *dvd_title_file;
+ ifo_handle_t *vmg_ifo;
+ ifo_handle_t *vts_ifo;
+ pgc_t *current_pgc;
+ int current_cell;
+
+ int start_sector;
+ int current_sector;
+ int end_sector;
+
+} DvdProtocolContext;
+
+static int bcd2int(int bcd)
+{
+ return (((bcd & 0xf0) >> 4) * 10 + (bcd & 0x0f));
+}
+
+static void dvd_logger_ff(void *opaque, dvd_logger_level_t dvd_level, const char *fmt, va_list args)
+{
+ int level = AV_LOG_TRACE;
+ if (dvd_level == DVD_LOGGER_LEVEL_ERROR) {
+ level = AV_LOG_ERROR;
+ } else if (dvd_level == DVD_LOGGER_LEVEL_WARN) {
+ level = AV_LOG_WARNING;
+ } else if (dvd_level == DVD_LOGGER_LEVEL_INFO) {
+ level = AV_LOG_INFO;
+ } else if (dvd_level == DVD_LOGGER_LEVEL_DEBUG) {
+ level = AV_LOG_DEBUG;
+ }
+ av_vlog(opaque, level, fmt, args);
+ /* add new line */
+ av_log(opaque, level, "\n");
+}
+
+static int ff_dvd_get_title_set_length(ifo_handle_t *vts_ifo, tt_srpt_t *tt_srpt, int title_nr)
+{
+ /* reindex 1 => 0 */
+ int vts_title_number = tt_srpt->title[title_nr].vts_ttn - 1;
+ int pgc_number = vts_ifo->vts_ptt_srpt->title[vts_title_number].ptt[0].pgcn;
+ dvd_time_t *playback_time = &vts_ifo->vts_pgcit->pgci_srp[pgc_number - 1].pgc->playback_time;
+
+ return (bcd2int(playback_time->hour) * 3600 +
+ bcd2int(playback_time->minute) * 60 +
+ bcd2int(playback_time->second)) * 1000;
+}
+
+static void ff_dvd_set_program_chain_info(DvdProtocolContext *ctx, int title_nr, int ptt_nr)
+{
+ /* reindex 1 => 0 */
+ int vts_title_number = ctx->vmg_ifo->tt_srpt->title[title_nr].vts_ttn - 1;
+ ptt_info_t *ptt = &ctx->vts_ifo->vts_ptt_srpt->title[vts_title_number].ptt[ptt_nr];
+ int pgc_id = ptt->pgcn;
+ int pgn = ptt->pgn;
+
+ ctx->current_pgc = ctx->vts_ifo->vts_pgcit->pgci_srp[pgc_id - 1].pgc;
+ ctx->current_cell = ctx->current_pgc->program_map[pgn - 1] - 1;
+
+ /* change angle */
+ if(ctx->current_pgc->cell_playback[ctx->current_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK ) {
+ ctx->current_cell += ctx->angle_nr;
+ }
+
+ ctx->current_sector = ctx->start_sector = ctx->current_pgc->cell_playback[ctx->current_cell].first_sector;
+ ctx->end_sector = ctx->current_pgc->cell_playback[ctx->current_cell].last_sector;
+}
+
+static int ff_dvd_get_next_cell(DvdProtocolContext *ctx)
+{
+ int next_cell = ctx->current_cell;
+
+ /* fast-forward until last-cell */
+ if (ctx->current_pgc->cell_playback[next_cell].block_type == BLOCK_TYPE_ANGLE_BLOCK) {
+ ctx->current_cell += ctx->angle_nr;
+ while (next_cell < ctx->current_pgc->nr_of_cells &&
+ ctx->current_pgc->cell_playback[next_cell].block_type != BLOCK_MODE_LAST_CELL) {
+ next_cell++;
+ }
+ }
+
+ /* take next cell */
+ next_cell++;
+ if (next_cell >= ctx->current_pgc->nr_of_cells) {
+ return -1;
+ }
+
+ return next_cell;
+}
+
+static int dvd_url_close(URLContext *h)
+{
+ DvdProtocolContext *ctx = h->priv_data;
+ ifoClose(ctx->vts_ifo);
+ ifoClose(ctx->vmg_ifo);
+ DVDCloseFile(ctx->dvd_title_file);
+ DVDClose(ctx->dvd);
+ return 0;
+}
+
+static int dvd_url_open(URLContext *h, const char *path, int flags)
+{
+ DvdProtocolContext *ctx = h->priv_data;
+ const char *dvd_path = path;
+ ifo_handle_t *vmg_ifo, *vts_ifo;
+ tt_srpt_t *tt_srpt;
+ int num_vts, num_titles;
+ int longest_title_nr;
+ int64_t longest_title_length_ms = 0;
+ int vts_nr;
+ int title_set_nr;
+ char disc_volume_id[32];
+
+ ctx->vmg_ifo = ctx->vts_ifo = NULL;
+ ctx->dvd_logger.pf_log = &dvd_logger_ff;
+
+ /* strip protocol from path */
+ av_strstart(path, DVD_PROTO_PREFIX, &dvd_path);
+
+ /* open dvd folder or disc */
+ if ((ctx->dvd = DVDOpen2(h, &ctx->dvd_logger, dvd_path)) == NULL) {
+ av_log(h, AV_LOG_ERROR, "DVDOpen(%s) failed\n", dvd_path);
+ return AVERROR(EIO);
+ }
+
+ if (DVDUDFVolumeInfo(ctx->dvd, &disc_volume_id[0], 32, NULL, 0) == 0) {
+ av_log(h, AV_LOG_INFO, "opened disc-volume-id: %s\n", disc_volume_id);
+ }
+
+ /* read toc */
+ if ((vmg_ifo = ifoOpen(ctx->dvd, 0)) == NULL) {
+ av_log(h, AV_LOG_ERROR, "ifoOpen(0) failed\n");
+ return AVERROR(EIO);
+ }
+
+ /* read titles */
+ num_vts = vmg_ifo->vts_atrt->nr_of_vtss;
+ num_titles = vmg_ifo->tt_srpt->nr_of_srpts;
+ av_log(h, AV_LOG_INFO, "there are %d usable titles\n", num_titles);
+
+ /* get title-set info(s) */
+ tt_srpt = vmg_ifo->tt_srpt;
+ if (ctx->title_nr >= num_titles) {
+ av_log(h, AV_LOG_ERROR, "invalid title id %d\n", ctx->title_nr);
+ return AVERROR(EINVAL);
+ }
+
+ for (vts_nr = 1; vts_nr <= num_vts; vts_nr++) {
+ int title_nr;
+ for (title_nr = 0; title_nr < num_titles; title_nr++) {
+ int title_length_ms;
+
+ if (tt_srpt->title[title_nr].title_set_nr != vts_nr) {
+ continue;
+ }
+
+ /* describe the title(s) info */
+ if ((vts_ifo = ifoOpen(ctx->dvd, vts_nr)) == NULL) {
+ av_log(h, AV_LOG_ERROR, "ifoOpen(%d) failed\n", title_nr);
+ return AVERROR(ENOMEM);
+ }
+
+ /* skip if video title set or program chain info is missing */
+ if (vts_ifo->vtsi_mat == NULL || vts_ifo->vts_pgcit == NULL) {
+ ifoClose(vts_ifo);
+ av_log(h, AV_LOG_TRACE, "skip title %d as no vts or pgc info is present\n",
+ title_nr);
+ continue;
+ }
+
+ /* skip if vts_ttn is incorrect */
+ if (tt_srpt->title[title_nr].vts_ttn < 1 ||
+ tt_srpt->title[title_nr].vts_ttn > num_titles) {
+ ifoClose(vts_ifo);
+ av_log(h, AV_LOG_WARNING, "skip title %d as vts_ttn is out of bounds\n",
+ title_nr);
+ continue;
+ }
+
+ title_length_ms = ff_dvd_get_title_set_length(vts_ifo, tt_srpt, title_nr);
+ av_log(h, AV_LOG_INFO, "title %03d : (%d:%02d:%02d) and %d chapter(s)\n",
+ title_nr,
+ (title_length_ms / 3600000),
+ (title_length_ms % 3600000) / 60000,
+ (title_length_ms % 60000) / 1000,
+ tt_srpt->title[title_nr].nr_of_ptts);
+
+ if (longest_title_length_ms <= title_length_ms) {
+ longest_title_nr = title_nr;
+ longest_title_length_ms = title_length_ms;
+ }
+
+ ifoClose(vts_ifo);
+ }
+ }
+
+ if (ctx->title_nr < 0) {
+ ctx->title_nr = longest_title_nr;
+ }
+
+ /* check if title selection is valid */
+ if (tt_srpt->title[ctx->title_nr].vts_ttn < 1 ||
+ tt_srpt->title[ctx->title_nr].vts_ttn > num_titles) {
+ av_log(h, AV_LOG_INFO, "selected title %d is not valid, vts_ttn is out of bounds\n",
+ ctx->title_nr);
+ ifoClose(vmg_ifo);
+ return AVERROR(EIO);
+ }
+
+ av_log(h, AV_LOG_INFO, "selected title %d\n", ctx->title_nr);
+
+ if (ctx->angle_nr > 0 && ctx->angle_nr >= tt_srpt->title[ctx->title_nr].nr_of_angles) {
+ av_log(h, AV_LOG_ERROR, "incorrect angle selected %d out of %d angle(s)\n",
+ ctx->angle_nr,
+ tt_srpt->title[ctx->title_nr].nr_of_angles);
+ }
+
+ /* open request title_set info */
+ title_set_nr = tt_srpt->title[ctx->title_nr].title_set_nr;
+ if ((vts_ifo = ifoOpen(ctx->dvd, title_set_nr)) == NULL) {
+ av_log(h, AV_LOG_INFO, "ifoOpen(%d) failed\n", title_set_nr);
+ return AVERROR(ENOMEM);
+ }
+
+ /* open file */
+ if ((ctx->dvd_title_file = DVDOpenFile(ctx->dvd, title_set_nr, DVD_READ_TITLE_VOBS)) == NULL) {
+ av_log(h, AV_LOG_ERROR, "DVDOpenFile(%d) failed\n", title_set_nr);
+ return AVERROR(EIO);
+ }
+
+ ctx->vmg_ifo = vmg_ifo;
+ ctx->vts_ifo = vts_ifo;
+
+ ff_dvd_set_program_chain_info(ctx, ctx->title_nr, 0);
+
+ return 0;
+}
+
+static int dvd_url_read(URLContext *h, unsigned char *buf, int size)
+{
+ DvdProtocolContext *ctx = h->priv_data;
+ ssize_t blocks_got;
+ int num_blocks = size / DVD_SECTOR_SIZE;
+
+ if (ctx->current_sector >= ctx->end_sector) {
+ int next_cell = ff_dvd_get_next_cell(ctx);
+ if (next_cell < 0) {
+ return AVERROR_EOF;
+ }
+
+ ctx->current_cell = next_cell;
+ ctx->start_sector = ctx->current_pgc->cell_playback[ctx->current_cell].first_sector;
+ ctx->end_sector = ctx->current_pgc->cell_playback[ctx->current_cell].last_sector;
+ ctx->current_sector = ctx->start_sector;
+ }
+
+ /* read all sectors that fit into buf */
+ blocks_got = DVDReadBlocks(ctx->dvd_title_file, ctx->current_sector, num_blocks, buf);
+ if (blocks_got <= 0) {
+ av_log(h, AV_LOG_ERROR, "failed to DVDReadBlocks() %d blocks at offset %d\n",
+ num_blocks, ctx->current_sector);
+ return AVERROR(EIO);
+ }
+ ctx->current_sector += blocks_got;
+ return blocks_got <= 0 ? AVERROR_EOF : blocks_got * DVD_SECTOR_SIZE;
+}
+
+#define OFFSET(x) offsetof(DvdProtocolContext, x)
+static const AVOption options[] = {
+ {"title", "", OFFSET(title_nr), AV_OPT_TYPE_INT, { .i64=-1 }, -1, 9999, AV_OPT_FLAG_DECODING_PARAM },
+ {"angle", "", OFFSET(angle_nr), AV_OPT_TYPE_INT, { .i64=0 }, 0, 256, AV_OPT_FLAG_DECODING_PARAM },
+ { NULL },
+};
+static const AVClass dvd_context_class = {
+ .class_name = "dvd",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+const URLProtocol ff_dvd_protocol = {
+ .name = "dvd",
+ .url_close = dvd_url_close,
+ .url_open = dvd_url_open,
+ .url_read = dvd_url_read,
+ .priv_data_size = sizeof(DvdProtocolContext),
+ .priv_data_class = &dvd_context_class,
+};
@@ -30,6 +30,7 @@ extern const URLProtocol ff_concatf_protocol;
extern const URLProtocol ff_crypto_protocol;
extern const URLProtocol ff_data_protocol;
extern const URLProtocol ff_fd_protocol;
+extern const URLProtocol ff_dvd_protocol;
extern const URLProtocol ff_ffrtmpcrypt_protocol;
extern const URLProtocol ff_ffrtmphttp_protocol;
extern const URLProtocol ff_file_protocol;
dvd:// protocol uses libdvdread for opening folders and/or disc-images, it then either identifies the longest title-set, or uses the title-set parameter. After opening the dvd, libdvdread-protocol will read and output all VOBs, in the cell and pack sequence defined by the program-chain. The (split)-VOB content that is streamed from the folder/disc by libdvdread, is given to ffmpeg probed demuxer/decoder, which decodes and presents the frames. The chapter and language stream information is present in the side-files (BUP/IFO), which are parsed for identifying the correct main video-title-set, but not attached to the stream information. Signed-off-by: Stanislav Ionascu <stanislav.ionascu@gmail.com> --- configure | 5 + doc/protocols.texi | 61 ++++++++ libavformat/Makefile | 1 + libavformat/dvd.c | 327 ++++++++++++++++++++++++++++++++++++++++ libavformat/protocols.c | 1 + 5 files changed, 395 insertions(+) create mode 100644 libavformat/dvd.c